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  <title>Remove a function definition</title>
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  <div id="layout-content"><div id="function.runkit7-function-remove" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">runkit7_function_remove</h1>
  <p class="verinfo">(PECL runkit7 &gt;= Unknown)</p><p class="refpurpose"><span class="refname">runkit7_function_remove</span> &mdash; <span class="dc-title">
   Remove a function definition
  </span></p>

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 <div class="refsect1 description" id="refsect1-function.runkit7-function-remove-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>runkit7_function_remove</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$function_name</code></span>): <span class="type">bool</span></div>


  <blockquote class="note"><p><strong class="note">注意</strong>: <span class="simpara">默认情况下，仅在用户空间可删除，重命名，或者修改函数。为了覆盖内部函数，必须启用 <var class="filename">php.ini</var> 中的
<code class="literal">runkit.internal_override</code> 设置。</span>
</p></blockquote>

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 <div class="refsect1 parameters" id="refsect1-function.runkit7-function-remove-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
<code class="parameter">function_name</code></dt>

    <dd>

     <p class="para">
       Name of the function to be deleted
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.runkit7-function-remove-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.runkit7-function-remove-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.runkit7-function-add.html" class="function" rel="rdfs-seeAlso">runkit7_function_add()</a> - Add a new function, similar to create_function</span></li>
    <li class="member"><span class="function"><a href="function.runkit7-function-copy.html" class="function" rel="rdfs-seeAlso">runkit7_function_copy()</a> - Copy a function to a new function name</span></li>
    <li class="member"><span class="function"><a href="function.runkit7-function-redefine.html" class="function" rel="rdfs-seeAlso">runkit7_function_redefine()</a> - Replace a function definition with a new implementation</span></li>
    <li class="member"><span class="function"><a href="function.runkit7-function-rename.html" class="function" rel="rdfs-seeAlso">runkit7_function_rename()</a> - Change a function's name</span></li>
   </ul>
  </p>
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